chore: update security secret configuration for dev environment

Author: mcruzdev

timeless-api/src/main/resources/application.properties

@@ -1,5 +1,7 @@
 # application
-security.sensible.secret=${SECURITY_KEY:YS0xNi1ieXRlLXNlY3JldA==}
+security.sensible.secret=${SECURITY_KEY}
+%dev.security.sensible.secret=YS0xNi1ieXRlLXNlY3JldA==
+
 whatsapp.incoming-messages.queue-url=${INCOMING_MESSAGE_FIFO_URL}
 whatsapp.messages-processed.queue-url=${MESSAGES_PROCESSED_FIFO_URL}